diff --git a/snapcraft.yaml b/snapcraft.yaml
index ec7c9b6..c468b64 100644
--- a/snapcraft.yaml
+++ b/snapcraft.yaml
@@ -189,6 +189,7 @@ parts:
       - libxslt1-dev
       - pkg-config
       - gcc
+      - cython3
     override-prime: |
       snapcraftctl prime
       # Now that everything is built, let's disable user site-packages